Fuse mounting



c. H. THOMAS 1,715,437

FUSE MOUNTING june 4, 1929.

Filed June 25, 1927 Patented June 4. 1929.

UNITED STATES PATENT oFFicE.

CYRIL H. THOMAS, OF CHICAGO, ILLINOIS, ASSIGNOR TO ROYAL ELECTRICfIMANUF. CO. INC., A. CORPORATION OF ILLINOIS.

FUSE MOUNTING.

Application med.v June 25,

My invention pertains to a fuse mounting adapted to receive a fuse of the expulsion type.y The mounting of my invention holds the fuse in such a manner as to permit of the fuse being used as a disconnect switch member. U

The object of my invention is to provide an improved fuse mounting including a pivotally mounted clip adapted to resiliently embrace a portion of the fuse. I also propose to provide novel mechanism for releasing the grip of said clip on the fuse as well as means for limiting the movement ot the clip about its pivot.

fThe ,invention relates to a mountlng or support for a high tension fuse, which may be used also as a disconnecting switch, 1n which the parts are so arranged that the switch may be opened and closed and the fuse may be applied to or removed from its holder by an operating stick or hook pole from the ground without necessitating climbing the pole or other structure on which the support may be'secured.

Other objects and advantages of my 1nvention will more fully appear from the following detailed description taken in con- -nection with the accompanying drawing, which illustrates one embodiment thereof, and in which:

Figure l is a side elevation of a fuse mounting 'embodying' the features of the present invention;

Figure 2 is a view ofjthe stationary resilient clip associated withone end of the fuse;

Figure 3 is an enlarged view of the pivotal clip of my invention taken from the rlght hand side o f Figure 1;

Figure 4 is plan view of the pivotal clip mechanism shown in Figure 1, and

Figure 5 is a fragmentary view of a modiied form of the invention.

In the drawin The reference character 10 designates generally a base upon which is supported a pair of spaced insulators 11 and 12. These insulators may be of any conventional construction.

F irmly clamped to the insulator 11 is a fixed resilient contact 13 which comprises an angular member 14 having its horizontal portion fastened to the top of the insulator 11 by means of a clamping construction 15. Fastened to the top of the Ymember 14 is a 1927. Serial No. 201,410.

resilient U-shaped contact 16 including a pair of jaws 17 adapted to embrace an end of the fuse 18.

The fuse 18 is preferably of the expulsion type and comprises essentially a. comparatively lon insulating tube 19 which may be made of glass or the like, and a strip of fusible metal (not shown) strung through the tube. Connected to the glass tube 19 are a pair of spaced collars 2O and 21. The collar 2O has clamped thereto an eye member 22 adapted to be engaged by an operating stick or fuse pole such as is well knownv in t e switch art. f

The contact jaws 17 resiliently embrace a metallic contact surface 23 formed integral with collar 20. Also ,it will be noted that the jaws 17 abut the collar 20 as Well as the edge of the eye member 22.

The insulator 12 has fastened to its top a yoke 25 which is preferably secured to the insulator by means of a clamping ring 26. The upper end of the insulator has formed therein an annular groove adapted to receive the clamping ring 26 which preferably comprises twoy parts secured together by means of bolts 28. The parts of the clamping ring 26 are also preferably formed `integral with the ends of the yoke member 25. Fastened' to the top of the yoke 25' is a U-shaped hinge member 30 including a pair of lateral legs 31 and 32. The le 32 has formed integral therewith a shou der portion-33, the purpose of which will be more fully described hereinafter. Connected to the two legs 31 and 32 is a horizontal pivot or hinge bolt 34. Pivoted upon this rod 34 is a contact clip 35 comprising a fixed jaw 36 and a resilient jawr37. Jaw 36 includes an offset leg portion 38 pivotally mounted upon rod 34. This portion 38 includes a shoulder 39 adapted to abut stop 33 when the clip is moved about the pivot rod 34 to disengage the fuse from the resilient clip 13 as will become more fully apparent with the prog-- ress of the present description. lThe jaw 36 also has formed integral therewith another offset portion 40 similar tok portion 38 and mounted upon -rod 34. These two offset or leg portions 38 and 40 serve to pivotally support the clip 35.

The jaw 36 has formed therein a semi-circular pocket 42 adapted to receive an end of the fuse 18.k Simllarly, the jaw 37 has a j cessed portion 45 to provide clearance for the jaw 36. This flexible conductor 61 functions.

resilient jaw 37 in its movement. That is to say, this space 46 permits the jaw 37 being moved slightly with respect to the fixed jaw 36.

Formed integral with the yoke 30 is a rearward extension 48 having fastened thereto a terminal 49 adapted to receive the end of a conductor line. Also fastened to the horizontal portion of clip member 14 is a lug or terminal 50 adapted to receive anl end of another conductor line.

Formed integral with leg 40 of jaw 36 is a boss or hub portion 51 having a bolt 52 eX- tending therethrough and held inplace by means of a nut 53 abutting the boss. Piv- ,otally mounted upon the bolt 52 is a locking cam or lever 54 including an eye portion 55 and an integral cam portion 56. As best shown in Figures 3 and 4 it will be noted that the cam portion 56 is adapted to embrace the outer surface of leaf spring 44 to move jaw 37 into tight engagement with the associated end of fuse 18. By engaging the eye 55 with a suitable'switch operating hook or stick, it is possible to move the cam portion 56 out of cooperation with the jaw a 37 so as to permit` of the fuse being moved endwise out of the jaw structure 35. The two jaws 36 and 37 are-adapted to embrace a contact collar 59 formed integral with collar 21. Moreover, when, the jaws are embracing the fuse they will abut' the collar 21 as shown in Figure 1.

Fastened to the member 3() as best shown in Figure 1 is a terminal lug 60 connected by a flexible copper conductor 61 to a terminal lug 62 fastened to the underside of to establish a good electrical connection between the yoke member 25 and the clip or jaws 35.

The operation of my device is briefly as follows:

Normally when the fuse is functioning to connect the terminals of the transmission lines, it will be disposed in the position shown in full lines in Figure 1. Should for any reason it be desirable to break the circuit the same may be accomplished by inserting the operating stick in eye 22 and moving the associated end of the fuse away from and out of cooperation with the two resilient jaws 17 of clip 13. In other words, the construction may be used as a disconnect switch'by moving the fuse 18 to the dotted position shown in Figure 1. Moreover, when the cam 56 is released from jaw 37 the shoulder or collar 21 on fuse 18 rests upon the slanting jaws and functions to hold the fuse in the aforesaid substantially diagonal position.

When it becomes necessary to replace the fuse 18 the fuse is first moved to the dotted position shown1 in Figure 1. Thereafter the hook 55 is engagedbythe operating stick and is pulled downwardly into the dotted position shown in both Figures 1 and 4. This results in the cam portion 56 bein moved out of cooperation with the jaw 3 causing the jaws to no longer ltightly embrace the fuse. Then by engaging the eye .22 with the operating stick, it is possible to raise the fuse bodily out of the jaws 36 and 37 comprising the clip 35. The fuse may be replaced by reversing Athe above described operations.

' In Figure 5 I have illustrated a modified form of mechanism for urging the jaws 37 and 36 into tight engagement with the fuse 18. This lmechanism comprises a bracket '53 connected to the jaw 36. Positioned between the vertical leg 54 of the bracket 53 andthe floating jaw 37 is a threaded member or screw 55 having one end abutting the jaw 37 and having its other end threaded into an opening 56 in the vertical leg 54 of the bracket 53. Secured to the member 55 is one end of an arm or crank 57. Obviously by raising the crank arm 57 the screw member 55 will be threaded out of the opening 56 toward the floating jaw 37. This results in the floating jaw 37 being lforced into tight engagement with the end of the fuse 18 between the two jaws.

Now it is, of Course, to be understood that although the applicant has illustrated and described in detail the preferred form of his invention, the invention is not to be thus limited, but only in so far as defined by the scope and spirit of the appended claims.

I claim as my invention:

1. In combination in a fuse mounting. a pair of spaced insulators for supporting said fuse. a terminal connected to one of said insulators and cooperable with one end of said fuse, and a pivotally mounted clip connected to the other insulator and adapted to receive the other end of said fuse, said clip comprising a pair of jaw members for engaging the fuse, and cam means operable by a hook pole for forcing said jaws into tight engagement with said fuse.

2. In combination in a fuse mounting, a pair of supports, a pair of clips carried by said supports for receiving the fuse, a pivotal mounting for one of said clips connected to its support, and means operable from a distance by a hook pole for moving said latter clip about its pivot to move one end operabie jaws and resilient means operable from a distance by a hook pole for fasten= ing the jaws togethen 3. In combination in a fuse mounting, a pair of supports, a pair of clips carried by said supports for receiving the fuse, a pivotal mounting for one of said clips connected to its support, and means for moving said latter clip about its pivot to move one end of the fuse outwardly away from the other clip into a disengaged position, said pivoted clip comprising a fixed jaw connected to said mounting and a second yieldable jaw fastened. to said first jaw, said jaws cooperating to define avpocket for receiving said fuse.

4. In combination in a fuse mounting, a pair of supports, a pair of clips carriedsby said supports for receiving the fuse, a pivotal mounting vfor one of said clips -connected to its support, means for moving said latter clip about its pivot to move one end of the fuse outwardly away from the other clip into a disengaged position, and a cam for releasing said pivotally mounted clip from the fuse, said cam including an eye adapted to be engaged byvan operating stick.

5. In combination in a fuse mounting, a pair of supports, a pair of clips carried by said supports 'for receivingthe fuse, a pivotal mounting for one of said clips con-` nected to its support, means for moving said latter clip about its pivot t0 move one end of the fuse outwardly away from the other clip into a disengaged position, said v ivotally mounted clip comprising a pair o cooperable jaws, one of which is fixed and the other yieldably supported, means for fasten-V ing the jaws together, and a'stop for engaging said jaws to limit -their movement about the pivo v A 6. In a fuse mounting, a base, a pair of vertical insulators mounted on said base, a pair of clips carried .by said insulators, said insulators being substantially parailel to.

7. A fuse mounting comprising a base, a

fixed fuse clip at one end and a pivoted fuse clip at the other end of said base, said pivoted clip having a ixedjaw and a" ieldable jaw which together receive one en of a fuse, acam'for pressing said yieldable jaw against a fuse, said cam having means for engagem'ent by a hook pole whereby said cam may be operated from a distance to control said yie dable jaw in either direction of movement.

8. A fuse mounting comprising a. base, a fixed fuse clip at one end and a pivoted fuse clip at the other end of said base, said pivoted clip having a fixed jaw'and a yieldable jaw which together receive one end 'of a vfuse, a cam for pressing said yieldable jaw against a fuse, said cam havin means for engagement by a hook pole w ereby said cam may be operated from a distance to control said yieldable jaw in either direction of movement, a conductor between the pivoted clip and its support, and a stop for limiting pivotal movement of said clip in one direction. Y

f .In testimony whereof. I have hereunto subscribed my name at Chicago, Cook County, Illinois.

CYRIL H. THOMAS. 

